Water-gage.



No. 736,518. PATENTED AUG. 18, 1903.

M. HERING.

WATER GAGE.

APPLICATION rmm SEPT. 20. 1901. x0 MODEL, 2 sums-31mm 1 Fig.1. 1 Fifl.

Inventor;

No. 736,518. PATENTED-AUG. 18, 1903.

NE; HBRING.

WATER GAGE. ARR Rhiannon nun snrw. 20. 1901.

H0 MODEL. 2 SHEETS-SHEET 2.

m: NORRIS Perms co PMOTO-LITHQ. WASHINGTON. a, c.

Patented August 18, 1963.

MAX HERING, OF ZITTAU, GERMANY.

WATER-GAG E.

SPECIFICATIQN forming part of Letters Patent No. 736,518, dated August18, 1903.

Application filed September 20, 1901. Serial '75I 7l- (N0 m To (tZZ whomit may concern: Be it known that I, MAX HERING, a subject of the King ofSaxony, residingin Zittau, Germany, have invented certain new and usefulImprovements in Tater-Gages, of which the following is a specification.

My invention has reference to improvements in water-gages forsteam-boilers, and relates more especially to means whereby breakage ofthe gage-glass is prevented almost to a certainty and whereby fragmentsof the glass if breakage should have occurred are prevented from beingscattered around.

According to the present invention the gageglass is made ofcomparatively large male or outer diameter and a female or innerdiameter usual in gage-glasses, thereby obtaining a relatively thickwall. This thick-walled gage-glass tube is surrounded by aprotecting-mantle, preferably of metal, such as brass or the like, whichin order to admit of ready inspection of the water-level within theglass tube is provided with cut-out portions. A cap or top nut and abottom nut are threaded upon the respective ends of the protectingmantleafter washers are placed between them and the glass tube ends, wherebythe steam and water tight joints are obtained. The top and bottom nutsare provided with the steam and Water inlets, respectively.

In order to make my invention more readily understood, I haveillustrated it on the accompanying sheet of drawings, in which- Figure 1is a side elevation of a water-gage according to my invention. Fig. 2represents a vertical longitudinal section through the same. Fig. 3 is asectional view illustrating my invention attached to a boiler.

Referring to the drawings, a is the gageglass tube with a relativelythick wall.

I) represents washers of any suitable material.

c is the top nut provided with an inner thread engaging a correspondingthread upon the outer upper end of the protecting-mantle 7, which isprovided with suitable openingse to allow of ready inspection of theheight of the water-level within the gage-glass. Upon the lower end ofthe mantle f threads the bottom nut 01. The top and bottom nuts 0 and dare provided with steam-inlet g and waterinlet h, respectively. Themantle f is provided with right and left hand threads on its oppositeends.

For more tightly packing the gage-glass or for removing it for repairingor other purposes it is only necessary to rotate the protecting-mantlein one or the other direction, whereby the top and bottom nuts aretightened or loosened, respectively.

In Fig. 3 I have shown how my gage may be attached to a boiler, thepipes g and h in this instance being bent between the gage and theboiler, so as to make them sufficiently flexible to permit the endpieces 0 and d to be moved toward and from each other in manipulatingthe gage, said pipes passing loosely through the heads of brackets t'andj, secured to the boiler 7t. Any other suitable or known means foraccomplishing this purpose may be adopted.

What I claim, and desire to secure by Letters Patent, is

In a water-gage the combination of a relatively thick walled glass tube,a protectingmantle surrounding the said thick-walled glass tube andprovided with inspection-openings, a top nut and a bottom nut threadingupon the upper and lower ends respectively of the said protecting-tube,steam and water pipes integral with said nuts, and washers interposedbetween the ends of the said glass tube and the inner faces of the saidtop nut and bottom nut, substantially as and for the purpose set forth.

In witness whereof I have hereunto signed my name, this 4th day ofSeptember, 1901, in the presence of two subscribing Witnesses.

. MAX HERING. lVituesses:

HERNANDO DE Soro, PAUL AREAS.

